e Day
I don't know what people do on e Day. So here is a picture of Euler skiing up the exponential function. The portrait of the function from Homeschool Math Blog e Day page.
March Equinox
Celebrate by participating in the Noon Day Project, that commemorates and recreates what Eratosthenes did over 2200 years ago to determine very accurately the circumference of the Earth. This is a holiday celebrated four times of the year, on two equinoxes and two solstices.
Star Wars Day ("May the Forth...)
On this day, people practice Jedi Mind Math Tricks on one another. The traditional holiday attire is a pun t-shirt involving a formula. T-shirt from Zazzle
Mind Tricks from Cut the Knot
June
21st-22nd The Solstice
June Solstice
Celebrate by participating in the Noon Day Project, that commemorates and recreates what Eratosthenes did over 2200 years ago to determine very accurately the circumference of the Earth. This is a holiday celebrated four times of the year, on two equinoxes and two solstices.
On this day, people play with math software and party in virtual math communities. It is the day Math 2.0 community was founded. Hyperbolic Paraboloid party in Second Life
September
18th Software Freedom Day
Software Freedom Day
On this day, people gift one another FOSS (free, open source software); create and share music, videos and other art made with free software; and get together to have local or online parties and seminars they can register at the day's site.
22nd-23rd The Equinox
September Equinox
Celebrate by participating in the Noon Day Project, that commemorates and recreates what Eratosthenes did over 2200 years ago to determine very accurately the circumference of the Earth. This is a holiday celebrated four times of the year, on two equinoxes and two solstices.
Celebrate 10/10 and especially 10/10/10 by watching the movies about powers of ten, listening to the Galaxy Song, and trying to visualize your place in the universe with interactives. Universcale works better than the infamous Total Perspective Vortex!
Also, Mary O'Keeffe points out that 101010=42 in binary.
On this day, participants host a show and tell of math art and puzzles, build math sculptures, and otherwise engage in advanced humanistic mathematics. They can also share math sculpture or math toy gifts.
Celebrate by participating in the Noon Day Project, that commemorates and recreates what Eratosthenes did over 2200 years ago to determine very accurately the circumference of the Earth. This is a holiday celebrated four times of the year, on two equinoxes and two solstices.
Math Holidays
Table of Contents
January
15th Sonya Kovalevsky Day
Sonia Kovalevsky Day: Women Mathematician HolidayOn this day, girls and women get together and geek out mathematically - usually, solve fun problems and eat Pi.
Picture from University of Iowa Sonia Kovalevsky Day
February
7th e Day
e DayI don't know what people do on e Day. So here is a picture of Euler skiing up the exponential function. The portrait of the function from Homeschool Math Blog e Day page.
March
14th Pi Day
Pi Day (also Albert Einstein's birthday)On Pi day, people bake pi(es) and play with circles!
Pi pie, from Kitchen Daily
Google Pi Day logo, 2010
You can also celebrate by making a Pi necklace.
Or listening to how Pi sounds on piano.
More ideas from Math is not a crime blog.
20th-21st The Equinox
March EquinoxCelebrate by participating in the Noon Day Project, that commemorates and recreates what Eratosthenes did over 2200 years ago to determine very accurately the circumference of the Earth. This is a holiday celebrated four times of the year, on two equinoxes and two solstices.
Ihor Charischak's explanation of the holiday.
Erathosthenes page
May
4th Star Wars Day
Star Wars Day ("May the Forth...)On this day, people practice Jedi Mind Math Tricks on one another. The traditional holiday attire is a pun t-shirt involving a formula.
T-shirt from Zazzle
Mind Tricks from Cut the Knot
June
21st-22nd The Solstice
June SolsticeCelebrate by participating in the Noon Day Project, that commemorates and recreates what Eratosthenes did over 2200 years ago to determine very accurately the circumference of the Earth. This is a holiday celebrated four times of the year, on two equinoxes and two solstices.
Ihor Charischak's explanation of the holiday.
Erathosthenes page
28th Tau Day
Tau is double PiOn this day, people make music videos and art about Tau. They also discuss why it's way better than Pi!
July
8th Math 2.0 Day
Math 2.0 Community EventsOn this day, people play with math software and party in virtual math communities. It is the day Math 2.0 community was founded.
Hyperbolic Paraboloid party in Second Life
September
18th Software Freedom Day
Software Freedom DayOn this day, people gift one another FOSS (free, open source software); create and share music, videos and other art made with free software; and get together to have local or online parties and seminars they can register at the day's site.
22nd-23rd The Equinox
September EquinoxCelebrate by participating in the Noon Day Project, that commemorates and recreates what Eratosthenes did over 2200 years ago to determine very accurately the circumference of the Earth. This is a holiday celebrated four times of the year, on two equinoxes and two solstices.
Ihor Charischak's explanation of the holiday.
Erathosthenes page
25th Math Story Day
Math Story DayOn this day, people tell stories and share digital stories. You can add links to your math stories and register your group.
Picture from ToonTalk "Resort Infinity" project
October
10th Powers of Ten Day
Powers of Ten DayCelebrate 10/10 and especially 10/10/10 by watching the movies about powers of ten, listening to the Galaxy Song, and trying to visualize your place in the universe with interactives. Universcale works better than the infamous Total Perspective Vortex!
Also, Mary O'Keeffe points out that 101010=42 in binary.
21st Gardner's Celebration of the Mind
Gathering for Gardner: Celebration of the MindOn this day, participants host a show and tell of math art and puzzles, build math sculptures, and otherwise engage in advanced humanistic mathematics. They can also share math sculpture or math toy gifts.
OCT 31 = DEC 25
Carol Cross's blog post about Natural Math people celebrating in 2010 by playing a Glass Bead Game
Mike South reminds us: Halloween is geek Christmas!
Hint: this joke refers to octal and decimal number bases. Here is the converter.
December
20th-23rd The Solstice
December SolsticeCelebrate by participating in the Noon Day Project, that commemorates and recreates what Eratosthenes did over 2200 years ago to determine very accurately the circumference of the Earth. This is a holiday celebrated four times of the year, on two equinoxes and two solstices.
Ihor Charischak's explanation of the holiday.
Erathosthenes page
Math ideas for mainstream holidays